Solve the problem.A building needs a ramp to make it handicap accessible. By law, the ramp must run 10 inches horizontally for every 1 inch of rise. If the surface of the ramp is 64 inches long, how far above the ground is the inclined end of the ramp? Round to the nearest tenth of an inch.
A. 5.8 inches
B. 21.3 inches
C. 6.4 inches
D. 4.5 inches
Answer: C
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Find the center and radius of the sphere.x2 + (y + 3)2 + (z - 4)2 = 49
A. C(0, 3, -4), a = 49 B. C(0, -3, 4), a = 49 C. C(0, 3, -4), a = 7 D. C(0, -3, 4), a = 7
Divide the rational expressions.
÷ 
A. 
B. (x + 10)(x - 6)
C. 
D. 
Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study?You would like to know if the customers of your video store are satisfied. You hand a customer satisfaction questionnaire to every customer who comes into the store and ask them to fill it out and place it in a box after they check out. The questionnaire asks customers to rate their satisfaction on a scale of 1-10 with regard to the video selection and customer service.
A. Wording of the questions B. Participation Bias C. Selection Bias D. Confounding variables E. Setting may not encourage honest responses
Solve the problem.A circular sector has an area of 486 ft2. The radius of the circle is 9 feet. What is the arc length of the sector?
A. 110 ft B. 54 ft C. 12 ft D. 108 ft